/* =========================================================================
   COMPONENTS
   ========================================================================= */

/* ---- Card --------------------------------------------------------------*/
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
}
.card-title { font-size: var(--fs-xs); color: var(--color-muted); text-transform: uppercase; letter-spacing: .06em; font-weight: 700; margin-bottom: var(--space-2); display: flex; align-items: center; gap: 6px; }
.card-stat { font-family: var(--font-display); font-size: 1.65rem; font-weight: 700; line-height: 1.2; }
.card-substat { font-size: var(--fs-sm); color: var(--color-muted); }

/* ---- Icon system: inline SVGs, sized in em so they scale with context --*/
.icon-svg { display: inline-block; vertical-align: -3px; flex-shrink: 0; color: currentColor; }
.nav-icon.icon-svg { color: var(--color-ink-soft); }
.nav-item.active .icon-svg { color: #fff; }
.btn .icon-svg { vertical-align: -2px; }
.stat-icon-wrap {
  width: 30px; height: 30px; border-radius: var(--radius-sm);
  background: var(--color-bg); display: inline-flex; align-items: center; justify-content: center;
  color: var(--color-accent); flex-shrink: 0;
}

/* Stitched "notebook" card variant */
.card-stitched {
  border-style: dashed;
  border-width: 2px;
  position: relative;
}
.card-stitched::before {
  content: "";
  position: absolute; inset: 6px;
  border: 1px dashed var(--color-border);
  border-radius: calc(var(--radius-lg) - 6px);
  pointer-events: none;
}

/* ---- Buttons -----------------------------------------------------------*/
.btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-weight: 600; font-size: var(--fs-sm);
  transition: transform var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
  background: var(--color-border);
  color: var(--color-ink);
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--color-ink); color: #fff; }
.btn-accent { background: var(--color-accent); color: #fff; }
.btn-danger { background: var(--color-danger); color: #fff; }
.btn-ghost { background: transparent; border-color: var(--color-border); }
.btn-icon { padding: var(--space-2); width: 38px; height: 38px; justify-content: center; }
.btn-sm { padding: var(--space-1) var(--space-3); font-size: var(--fs-xs); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }

/* ---- Forms ---------------------------------------------------------------*/
.field { display: flex; flex-direction: column; gap: var(--space-1); margin-bottom: var(--space-3); }
.field label { font-size: var(--fs-sm); font-weight: 600; color: var(--color-ink-soft); }
.field .hint { font-size: var(--fs-xs); color: var(--color-muted); }
input[type="text"], input[type="email"], input[type="number"], input[type="date"],
input[type="time"], input[type="datetime-local"], input[type="url"], input[type="search"],
select, textarea {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-ink);
  width: 100%;
}
textarea { resize: vertical; min-height: 70px; font-family: var(--font-body); }
input:focus, select:focus, textarea:focus { border-color: var(--color-accent); }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px,1fr)); gap: var(--space-3); }

.checkbox-row { display: flex; align-items: center; gap: var(--space-2); }
input[type="checkbox"], input[type="radio"] { width: 18px; height: 18px; accent-color: var(--color-accent); }

.range-row { display: flex; align-items: center; gap: var(--space-3); }
input[type="range"] { accent-color: var(--color-accent); flex: 1; }

.color-swatch-picker { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.color-swatch {
  width: 28px; height: 28px; border-radius: 50%;
  border: 2px solid transparent; cursor: pointer;
}
.color-swatch.selected { border-color: var(--color-ink); }

/* ---- Badges / labels -----------------------------------------------------*/
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 10px; border-radius: var(--radius-pill);
  font-size: var(--fs-xs); font-weight: 700;
  background: var(--color-border); color: var(--color-ink);
}
.badge-high { background: rgba(176, 67, 44, 0.18); color: var(--priority-high); }
.badge-medium { background: rgba(201, 162, 39, 0.22); color: #7a5f13; }
.badge-low { background: rgba(47, 111, 94, 0.18); color: var(--priority-low); }
.tag { background: var(--color-bg); border: 1px solid var(--color-border); padding: 2px 8px; border-radius: var(--radius-pill); font-size: var(--fs-xs); }
.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }

/* ---- Progress ------------------------------------------------------------*/
.progress-track { height: 8px; background: var(--color-border); border-radius: var(--radius-pill); overflow: hidden; }
.progress-fill { height: 100%; background: var(--color-accent); border-radius: var(--radius-pill); transition: width var(--dur-slow) var(--ease-out); }
.progress-ring { transform: rotate(-90deg); }
.progress-ring circle { fill: none; stroke-width: 8; }

/* ---- Checklist -----------------------------------------------------------*/
.checklist { display: flex; flex-direction: column; gap: var(--space-2); }
.checklist-item {
  display: flex; align-items: flex-start; gap: var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  cursor: grab;
}
.checklist-item[draggable="true"]:active { cursor: grabbing; }
.checklist-item.completed { opacity: .6; }
.checklist-item.completed .item-title { text-decoration: line-through; }
.checklist-item.dragging { opacity: .4; }
.checklist-item.drag-over { border-top: 3px dashed var(--color-accent); }
.checklist-item.priority-high { border-left-color: var(--priority-high); }
.checklist-item.priority-medium { border-left-color: var(--priority-medium); }
.checklist-item.priority-low { border-left-color: var(--priority-low); }

.item-body { flex: 1; min-width: 0; }
.item-title { font-weight: 600; }
.item-desc { font-size: var(--fs-sm); color: var(--color-muted); margin-top: 2px; }
.item-meta { display: flex; gap: var(--space-2); flex-wrap: wrap; margin-top: var(--space-2); font-size: var(--fs-xs); color: var(--color-ink-soft); }
.item-actions { display: flex; gap: var(--space-1); }
.subtasks { margin-top: var(--space-2); padding-left: var(--space-5); display: flex; flex-direction: column; gap: var(--space-1); }
.subtask-row { display: flex; align-items: center; gap: var(--space-2); font-size: var(--fs-sm); }
.countdown { font-family: var(--font-mono); font-weight: 700; color: var(--color-accent); }
.countdown.overdue { color: var(--color-danger); }
.drag-handle { color: var(--color-muted); cursor: grab; padding-top: 3px; }

/* ---- Toast / notifications -----------------------------------------------*/
.toast-region { position: fixed; right: var(--space-5); bottom: var(--space-5); display: flex; flex-direction: column; gap: var(--space-2); z-index: 200; }
.toast {
  background: var(--color-ink); color: #fff;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 220px;
  animation: toast-in var(--dur-base) var(--ease-out);
  display: flex; align-items: center; gap: var(--space-2);
}
.toast.success { background: var(--color-accent); }
.toast.error { background: var(--color-danger); }
@keyframes toast-in { from { transform: translateY(12px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* ---- Modal ---------------------------------------------------------------*/
.modal-overlay {
  position: fixed; inset: 0; background: rgba(27,42,74,0.45);
  display: flex; align-items: center; justify-content: center;
  z-index: 300; padding: var(--space-4);
}
.modal {
  background: var(--color-bg-elevated);
  border-radius: var(--radius-lg);
  max-width: 560px; width: 100%;
  max-height: 88vh; overflow-y: auto;
  padding: var(--space-5);
  box-shadow: var(--shadow-lg);
  animation: modal-in var(--dur-base) var(--ease-out);
}
@keyframes modal-in { from { transform: scale(.96); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--space-4); }
.modal-footer { display: flex; justify-content: flex-end; gap: var(--space-2); margin-top: var(--space-5); }

/* ---- Context menu ----------------------------------------------------------*/
.context-menu {
  position: fixed; z-index: 250;
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); box-shadow: var(--shadow-md);
  padding: var(--space-1); min-width: 180px;
}
.context-menu button {
  display: block; width: 100%; text-align: left; background: none; border: none;
  padding: var(--space-2) var(--space-3); border-radius: var(--radius-sm); font-size: var(--fs-sm);
}
.context-menu button:hover { background: var(--color-border); }

/* ---- Empty state -----------------------------------------------------------*/
.empty-state { text-align: center; padding: var(--space-8) var(--space-4); color: var(--color-muted); }
.empty-state .empty-icon { font-size: 2.5rem; margin-bottom: var(--space-3); }

/* ---- Loading skeleton -------------------------------------------------------*/
.skeleton { background: linear-gradient(90deg, var(--color-border) 25%, var(--color-bg) 37%, var(--color-border) 63%); background-size: 400% 100%; animation: skeleton-loading 1.4s ease infinite; border-radius: var(--radius-sm); }
@keyframes skeleton-loading { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }
.skeleton-line { height: 14px; margin-bottom: 8px; }
.skeleton-card { height: 90px; }

/* ---- Calendar ------------------------------------------------------------*/
.calendar-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; }
.calendar-weekday { text-align: center; font-size: var(--fs-xs); color: var(--color-muted); font-weight: 700; padding-bottom: 4px; }
.calendar-cell {
  min-height: 84px; background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); padding: var(--space-1); font-size: var(--fs-xs);
  display: flex; flex-direction: column; gap: 2px; position: relative;
}
.calendar-cell.today { border-color: var(--color-accent); border-width: 2px; }
.calendar-cell.other-month { opacity: .4; }
.calendar-cell .cell-date { font-weight: 700; font-family: var(--font-display); }
.calendar-event { background: var(--color-accent); color: #fff; border-radius: 4px; padding: 1px 4px; font-size: 10px; cursor: grab; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.calendar-cell.drop-target { outline: 2px dashed var(--color-accent-2); }

/* ---- Chart canvases ----------------------------------------------------------*/
.chart-wrap { width: 100%; }
.chart-legend { display: flex; gap: var(--space-3); flex-wrap: wrap; font-size: var(--fs-xs); margin-top: var(--space-2); }

/* ---- Preview page (notebook look) -----------------------------------------*/
.preview-page {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: var(--space-5);
  min-height: 480px;
  position: relative;
}
.preview-page.style-notebook { background-image: repeating-linear-gradient(var(--color-surface) 0 27px, var(--color-border) 27px 28px); border-left: 3px solid var(--color-danger); }
.preview-page.style-minimal { box-shadow: none; border: 1px solid var(--color-border); }
.preview-page.style-corporate { border-top: 6px solid var(--color-ink); }
.preview-page.style-academic { font-family: var(--font-display); border: 1px double var(--color-ink); }
.preview-page.style-glass { background: rgba(255,255,255,0.35); backdrop-filter: blur(14px); border: 1px solid rgba(255,255,255,0.5); }
.preview-page.style-neu { background: var(--color-bg); box-shadow: 8px 8px 16px rgba(0,0,0,0.12), -8px -8px 16px rgba(255,255,255,0.7); }
.preview-page.style-dark { background: #14192B; color: #EDEBE4; }
.preview-page.size-a4 { aspect-ratio: 210/297; max-width: 380px; margin: 0 auto; overflow-y: auto; }
.preview-page.size-letter { aspect-ratio: 8.5/11; max-width: 380px; margin: 0 auto; overflow-y: auto; }
.preview-page.size-mobile { max-width: 260px; margin: 0 auto; }
.preview-page.size-tablet { max-width: 340px; margin: 0 auto; }

.preview-title { font-family: var(--font-display); font-size: var(--fs-lg); margin-bottom: 2px; }
.preview-meta { font-size: var(--fs-xs); color: var(--color-muted); margin-bottom: var(--space-3); }
.preview-checklist-item { display: flex; gap: var(--space-2); align-items: flex-start; padding: 4px 0; border-bottom: 1px dotted var(--color-border); font-size: var(--fs-sm); }

/* ---- Achievement badges -------------------------------------------------*/
.achievement { display: flex; flex-direction: column; align-items: center; gap: 4px; width: 76px; text-align: center; }
.achievement .medal { width: 48px; height: 48px; border-radius: 50%; display: grid; place-items: center; font-size: 1.4rem; background: var(--color-border); }
.achievement.unlocked .medal { background: var(--color-accent-2); color: #fff; }
.achievement span { font-size: 10px; color: var(--color-muted); }